| Mycobacterium insubricum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium insubricum Tortoli et al. 2009.
Mycobacterium, Mycobacterium insubricum Tortoli et al. 2009.
Acid-fast rods. Gram-positive. Spores are not produced.
Colonies are smooth, white, nonchromogenic, visible within 7 days at 25-37 ºC on
Lowenstein-Jensen medium. Growth is not observed at 42 ºC. Scanty growth on
MacConkey agar by some strains.
Lowenstein-Jensen medium. Growth is not observed at 42 ºC. Scanty growth on
MacConkey agar by some strains.
Isolated from sputa of patients with various respiratory signs.
Resistant to thiophen-2-carboxylic acid hydrazide (TCH) and isoniazid. Susceptible to p-nitrobenzoic acid, hydroxylamine, amikacin,
azlocillin, cefoxitin, ceftriaxone, ciprofloxacin, clarithromycin, ethambutol, gatifloxacin, linezolid, minocycline, moxifloxacin, rifabutin,
sulfamethoxazole, and tobramycin. Variable susceptibility to imipenem, rifampicin, and streptomycin.
Resistant to thiophen-2-carboxylic acid hydrazide (TCH) and isoniazid. Susceptible to p-nitrobenzoic acid, hydroxylamine, amikacin,
azlocillin, cefoxitin, ceftriaxone, ciprofloxacin, clarithromycin, ethambutol, gatifloxacin, linezolid, minocycline, moxifloxacin, rifabutin,
sulfamethoxazole, and tobramycin. Variable susceptibility to imipenem, rifampicin, and streptomycin.
Undetermined.
- Tortoli E, Baruzzo S, Heijdra Y, Klenk HP, Lauria S, Mariottini A, van Ingen J. Mycobacterium insubricum sp. nov. Int J Syst Evol
Microbiol 2009; 59:1518-1523.
Positive results for tellurite reduction.
Negative results for arylsulfatase (3 days), catalase, semiquantitative catalase, heat-stable catalase (68 ºC), beta-glucosidase, nitrate
reduction, niacin accumulation, Tween 80 hydrolysis, and urease.
Negative results for arylsulfatase (3 days), catalase, semiquantitative catalase, heat-stable catalase (68 ºC), beta-glucosidase, nitrate
reduction, niacin accumulation, Tween 80 hydrolysis, and urease.
(c) Costin Stoica
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